<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>
<body>
    <p>年级课程卡</p>
    <p class="p1">就不见看不见看不看</p>
    <script>
        document.addEventListener('contextmenu',function(e){
            e.preventDefault();
        })
        document.addEventListener('selectstart',function(e){
            e.preventDefault();
        })
    </script>
</body>
</html>